Hillside is a suburb of Melbourne, Victoria, Australia, 23 km north-west of Melbourne's Central Business District. Its local government areas are the cities of Brimbank and Melton. At the 2011 Census, Hillside had a population of 16,326. There is another Hillside in Victoria, a small rural district near Bairnsdale.
The suburb was created only recently and is still a developing area. It has estates with names of Cypress Rise, Banchory Grove, Parkwood Green, Bellevue Hill, Sugargum Estate, Hillside 2000 and Regency Rise. A large water tower (known as "The Golf Ball" by locals) exists in the estate of The Bellevue, which can be seen from several kilometres around and, along with the large radio transmission towers in nearby Delahey, is a major landmark of the outer north-western suburban area.
The streets of Hillside are lined with plane trees, which were planted during the farming days of Hillside. The terrain has a slight slope going up the main street.